A classification of the squash and gourd bees Peponapis and Xenoglossa (Hymenoptera: Apoidea) /

by Hurd, Paul David 1921-1982
Published 1970

Parasitic bees of the genus holcopasites ashmead (Hymenoptera : Apoidea).

by Hurd, Paul David 1921-1982, Hurd, Paul David 1921-1982, Linsley, Earle Gorton 1910-2000

The bee family oxaeidae with a revision of the North American species (Hymenoptera : Apoidea).

by Hurd, Paul David 1921-1982, Hurd, Paul David 1921-1982, Linsley, Earle Gorton 1910-2000

Ecology of the squash and gourd bee, Peponasis Pruinosa, on cultivated cucurbite in California (Hymenoptera : Apoidea).

by Hurd, Paul David 1921-1982, Hurd, Paul David 1921-1982, Linsley, Ray K., Michellbacher, A. E.

Intrafloral ecology /

by Baker, Herbert George 1920-2001

The principal Larrea bees of the south western United States (Hymenoptera : Apoidea) /

by Linsley, Earle Gorton 1910-2000
Published 1975

Comparative behavioral biology of two middle cast species of Carpenter bees (Xylocopa Latreille) (Hymenoptera : Apoidea) /

Published 1983

Principal sunflower bees of North America with emphasis on the southwestern United States (Hymenoptera : Apoidea) /

Published 1980